A route to room temperature ferromagnetic ultrathin SrRuO$_3$ films

@article{Si2015ART,
  title={A route to room temperature ferromagnetic ultrathin SrRuO\$\_3\$ films},
  author={Liang Si and Zhicheng Zhong and Janusz Tomczak and Karsten Held},
  journal={Physical Review B},
  year={2015},
  volume={92}
}
Experimental efforts to stabilize ferromagnetism in ultrathin films of transition metal oxides have so far failed, despite expectations based on density functional theory (DFT) and DFT+U. Here, we investigate one of the most promising materials, SrRuO$_3$, and include correlation effects beyond DFT by means of dynamical mean field theory. In agreement with experiment we find an intrinsic thickness limitation for metallic ferromagnetism in SrRuO$_3$ thin films. Indeed, we demonstrate that the… 
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